JPH1118959A - Deep fryer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a deep fryer in which oil is never oxidized or polymerized even by long-time use in various kinds of tempura (Japanese deep-fried food) cooking or deep-fry cooking, a food can be thus cooked in a dry state with good appearance, and smoke is hardly generated, and a method therefor. SOLUTION: A metallic electrode plate 2 having a number of hole parts 3 is set near the inside bottom part of a metallic pan 6 so as to be electrically insulated from the pan, so that an external high voltage can be applied to the metallic electrode plate 2. Oil is put in this pan, and a high voltage between the metallic electrode plate 2 and the pan, whereby a fry such as tempera can be cooked.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fryer such as a fryer, and more particularly to a fryer such as a fryer, which is capable of preventing edible fried oil from being denatured by oxidation and the like, being able to fry fried oil and the like, and producing oily smoke. It is related to a difficult fry pan.

[0002]

2. Description of the Related Art Various types of fryers (fried pans) for various deep-fried foods such as tempura pans which have been conventionally used are known. Among them, those that can simply heat-treat the oil inside the pan by gas or electricity occupy the mainstream, and there are a method of performing frying while applying a voltage to the oil, and a pan for frying used therefor. Did not.

[0003] Among such fryers, pots used for tempura dishes or fried foods, that is, tempura pots, are prepared by directly heating edible fried oil in a tempura pot from outside the pot. There were the following problems. Because the oil is heated to a high temperature, the oil is easily oxidized and discolored, and the fried food does not fry with a beautiful color. Since the oil is heated to a high temperature, the polymerization reaction of the oil proceeds, the viscosity of the oil increases, and the frying does not fry quickly. When the water contained in the fried food and the oil evaporates, so-called oil smoke, in which fine particles of the oil are taken out together with the steam, comes out, which is a cause of soiling the room. Usually, a fan is used to discharge the oily smoke to the outside of the room. However, cleaning to remove oil adhering to the fan is difficult.

[0004] Therefore, it is considered difficult to fry a tempura dish or various fried foods at home in a preferable fox color and then fry them. In addition, the labor for maintaining a clean cooking room is also great. Was something. Especially in tempura dishes, the temperature of the tempura oil varies slightly depending on the type of ingredients to be fried,
At home, cooking at a time makes it almost impossible to demand that various types of tempura be cooked in a favorable condition as if they were fried by a tempura craftsman.

[0005]

SUMMARY OF THE INVENTION According to the present invention, various kinds of tempura dishes or deep-fried dishes can be cooked in a good-looking crisp state in which the above-mentioned drawbacks have been improved, and oil smoke does not easily appear. It is an object to provide a pan for fried food and the method. That is, the present invention, by applying a high voltage to the oil for frying, even if the temperature of the oil is relatively low temperature, it is possible to fry various tempura materials in a favorable fox-colored state, It is an object of the present invention to provide a method, a pan for frying, and a method capable of preventing modification of oil such as oxidation and polymerization and also preventing generation of oil smoke.

[0006]

According to the present invention, a metal electrode plate having a number of apertures is electrically insulated from a pot near the bottom inside the metal pot. To provide a fryer pan characterized by being configured so that a high voltage can be applied to the metal electrode plate from the outside, and by adding oil to the pan, the metal electrode plate and Provided is a method for frying fried food such as tempura while applying a high voltage between the pan and the pan.

Further, the present invention also provides a metal electrode plate used for the above-mentioned fryer pan, and more specifically, a metal electrode plate installed near the bottom inside the metal pan. The present invention also provides an electrode plate for a fry pan, wherein the outer peripheral portion of the electrode plate in contact with the pan is covered with a ceramic having high electrical insulation.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention applies various types of tempura, especially when cooking oil such as tempura and fried chicken, by applying a high voltage to heated oil even when the oil is in a relatively low temperature state. It is possible to cook in a uniformly crisp state without discriminating the ingredients and the like, and for those days as well, in a favorable fox color. Normally, the temperature of the tempura oil when frying the tempura etc. is as high as about 200 ° C. to 250 ° C., but by using the tempura pan of the present invention, good tempura is cooked even at a low temperature of about 180 ° C. You can. It has been found that the high voltage applied to the tempura oil may be about 1,000 V to 10,000 V. At this time, the current is 5 mA to 50 m
A flows as much as A.

The application of the high voltage is performed, for example, between a metal electrode plate provided with a large number of apertures, which are electrically insulated from the pan, near the bottom inside the pan, and the main body of the pan. Will be
That is, the metal electrode plate is connected to a high-voltage supply device provided outside via an electric wire covered with an insulator, and a higher voltage is applied from the high-voltage supply device. As the electrode plate, any metal plate having electrical conductivity may be used.For example, a metal plate made of iron, copper, tin, stainless steel, aluminum, or the like can be used.
The shape may be set, for example, at a position approximately one-third to one-fourth of the bottom of the fryer pan, and may be large enough to cover the vicinity of the bottom of the pan. The thickness may be about 0.5 mm to about 5 mm. Further, a wire net made of a metal wire may be used. The metal electrode plate is provided with a large number of apertures, and these apertures are provided together with the apertures for dropping the glazing to ensure circulation of oil inside the pan. Is what it is. That is, the oil in the pan is circulated through the opening by being heated, so that uniform temperature adjustment can be performed. The diameter of the opening provided in the electrode plate is not particularly limited as long as the oil circulation can be ensured, but it is more preferable that the diameter is such that the skyscraper does not sink to the bottom of the pot and remains at the upper portion of the electrode plate. Also, the number thereof may be provided according to the diameter of the opening, and is not particularly limited.

Hereinafter, the method of the present invention will be described in principle with reference to FIG. According to the method of the present invention, a voltage is applied between the electrode plate 2 in the metal pan 6 containing the oil 10 and the metal pan 6 from a high voltage supply device 20 provided outside. The application of this voltage not only causes the oil to polarize,
Water dispersed in the oil will also cause polarization. Oil has a very high electric resistance, so that only a very small current flows even when a high voltage is applied. However, the current easily flows because water contained in the time of frying is brought in. Therefore, the whole system is equivalent to a kind of large condenser, and fries in a state in which oil and water are electrically polarized.

[0011] For this reason, it is considered that free electrons due to the minute current act on the oil molecules to prevent not only oxidation of the oil but also polymerization due to the oxidation. Therefore,
It is thought that the fatigue of oil is prevented and it will last a long time. Water molecules are usually associated with each other, but break off when a voltage is applied, and are uniformly dispersed in oil molecules. For this reason, since the evaporation of water is easily performed, it is considered that the water flies quickly. Furthermore, since water molecules are not associated with each other, water vapor of large water droplets is not generated, and it is considered that generation of oily smoke accompanying generation of water vapor can be prevented. FIG. 6 (under normal conditions) and FIG. 7 (under water spray conditions) show a comparison of the degree of oxidation of oil (soy oil) when a voltage is applied and when no voltage is applied.

In view of the above, by employing the method of the present invention, it becomes possible to fry various kinds of tempura at a relatively low temperature, and it is inevitable to oxidize and polymerize the tempura oil by cooking at a high temperature. Denaturation is less likely to occur. In addition, it is possible to avoid the generation of oil smoke, oil odor, and oil soot due to the heating of the oil. At home, there is no oil odor in the room forever, and the vicinity of the worktop is kept clean. You can do it. Thus, as long as the fryer pan and method of the present invention are used, the type of edible frying oil is not particularly limited,
Various tempura oils commonly used in homes,
For example, various frying oils such as soybean oil, rapeseed oil, olive oil, corn oil, safflower oil, and safflower oil, or salad oil can be used.

Hereinafter, the fryer pan of the present invention will be described in more detail with reference to the drawings based on specific examples. In the following, a preferred example of a fry pan is described as an embodiment of a fry pan, but the same applies to other fry pans. FIG. 1 is a diagram showing a top view of a fryer pot as an embodiment of the fryer pan of the present invention. In the drawing, reference numeral 1 denotes an entire fryer pan of the present invention in which an electrode plate 2 is installed on a metal pan 6. The electrode plate 2 is an electrode plate composed of a metal plate 7 whose outer peripheral portion is covered with an insulating member 4. The metal plate 7 constituting the electrode plate 2 has a large number of apertures 3,
.. Are provided. The electrode plate 2, as near the bottom of the pan, is installed so as to 1 Summary 3 minutes to cover the entire surface of about one position of 4 minutes from the bottom, the electrode plate 2
The outer peripheral portion of the metal plate 7 is covered with an insulating member 4 such as ceramic having high electrical insulation. In the method of installing the electrode plate 2 on the main body of the pot 1 , the electrode plate 2 is installed via the insulating member 4 in order to secure electrical insulation between the electrode plate 2 and the metal pot 6. An electric wire 5 coated with an insulating material is connected to the electrode plate 2 , and a high-voltage supply device 20 (omitted in the drawing) provided outside via the electric wire.
High voltage is applied.

[0014] Figure 2 shows a central cross section seen for deep fryer 1 is a frying pan of Figure 1 of the present invention from the front (A-A line cross section in FIG. 1). Although the shape of the bottom of the fryer 1 according to the present invention based on the embodiment of this figure is substantially circular, it is not necessary to be limited to such a shape, and the bottom is almost flat and upward. Even if it is circular,
Further, it may have a stepwise shape. The electrode plate 2 in the fryer of the present invention is installed on a metal pan 6 via an insulating member 4 provided on an outer peripheral portion thereof.
Since the insulating member 4 such as ceramic having high electrical insulation is used on the outer peripheral portion of the metal plate 7 constituting the electrode plate, even if a high voltage is applied to the metal plate 7, the metal pan 6 Is avoided. 3,
3,... Indicate openings of the metal plate 7 in the electrode plate 2 , and 5 indicates a connecting member between the external high voltage supply device 20 and the electrode plate 2 .

FIG. 3 is a top view of an electrode plate 2 installed in a fryer 1 which is a fry pan according to the present invention, and FIG. 4 is a cross-sectional view of the metal electrode plate 2 shown in FIG. The figure is shown. The reference numerals in each figure are the same as those in FIGS. 1 and 2, and 3, 3,...
4 is an insulating member covering the outer peripheral portion of the metal plate 7;
Reference numeral 5 denotes a connection member between the external high voltage supply device 20 (omitted in the drawing) and the electrode plate 2 .

[0016] Cooking the tempura using the tempura pan of the present invention based on the above configuration is performed, for example, as follows. That is, for example, an appropriate amount of soybean oil as edible frying oil is put into the fryer pan 1 , heated by gas or the like from the outside of the bottom of the pan, and the oil in the pan is heated to a temperature of about 180 ° C., and the temperature is maintained. Then, a high voltage is externally applied to the electrode plate 2 . The tempura oil in the pot is heated from the bottom of the pot and circulated through a number of openings provided in the electrode plate. Flows, and the whole tempura oil is easily maintained at a substantially uniform temperature state. In this state, the desired tempura ingredients with the tuna are put in, and the tempura is cooked, so that the fox-colored tempura with a good fried state is completed.

As an example, for example, even the present inventor who has little skill in tempura artisan uses soybean water as a tempura oil, heats it to 180 ° C., and then applies an AC voltage of 3,000 V to the electrode plate. While applying, the shrimp with the rolls was thrown in and cooked with tempura.Even if the rolls containing water entered, almost no oil smoke was raised,
In about 1 minute and 30 seconds, it was possible to fry a fox-colored tempura with a crisp texture.

[0018]

As described above, the fryer pan of the present invention, in particular, the tempura pan has a configuration for applying a high voltage to the oil for the tempura. Karaage cuisine can be cooked in a good-looking and crisp state without any special skills. In addition, by using the pot of the present invention, even when the tempura oil is in a relatively low temperature state, various tempura materials can be fried in a preferable fox-colored state, and the modification of oxidation, polymerization, etc. of the oil can be achieved. This has the advantage of preventing oil fumes from being generated. Therefore, from that point of view, it becomes possible to fry various kinds of tempura at a relatively low temperature, so that the oxidation of the tempura oil by cooking at a high temperature, denaturation such as polymerization and the like can be prevented, and the oil lasts longer. Not only is it possible to avoid the generation of oil smoke, oil odor, and oil soot due to the heating of the oil, and at home, there is no oil odor in the room forever. This has the advantage of keeping the neighborhood clean.

These points are listed as follows. By applying a high voltage to the oil for frying and applying a small current, the oxidation and polymerization of unsaturated fatty acids contained in the oil are prevented. Therefore, even if the oil is kept at a high temperature, fatigue / effect due to oxidation / polymerization of the oil hardly occurs, and the oil can always be kept in a fresh state. Therefore, the oil can be used to the end and is very economical because no waste oil is generated. Since the oil can always be kept fresh, the fried food can be fried in the same state as when fresh oil is used, and a delicious fried food can be obtained. By the application of a high voltage, the surface tension of water contained in the oil is reduced, and the water evaporates in molecular order, so that water vapor (micro water droplets) is not generated. Therefore, no oil droplets are generated due to the generation of water vapor, and no oil smoke is generated. Even if the fried food containing water is poured into high-temperature oil, no oil fumes are generated, so that the room can be kept clean. In particular, the trouble of cleaning the fan can be saved. When a deep-fried food containing water is poured into oil, the water evaporates instantaneously, so that the finish of the deep-fried food fries quickly and is not sticky. This is because noodles and the like used for fried foods do not dissolve in water at room temperature, but react with water at a certain temperature or higher to saccharify and dissolve in a viscous state. However, when the pan for fried foods according to the present invention is used, the water content in the oil is low and the water contained in the rollers also evaporates instantaneously. Many holes are created in the roller, and the fried food fries quickly.

[Brief description of the drawings]

FIG. 1 is a diagram showing a top view of a tempura pan as a fry pan as one embodiment of the present invention.

FIG. 2 is a sectional view taken along the line AA of the front center of the fry pan of the embodiment of FIG. 1;

FIG. 3 is a top view of the electrode plate for the pan of the embodiment of FIG. 1;

FIG. 4 is a cross-sectional view of an electrode plate for a fry pan of the embodiment of FIG.

FIG. 5 is a diagram illustrating the principle of the method of the present invention.

FIG. 6 is a graph showing the degree of oxidation of oil under use under normal conditions with and without the application of voltage over time.

FIG. 7 is a graph showing, over time, the degree of oxidation of oil by heating under the condition of spraying water, depending on whether or not a voltage is applied.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Fry pan of this invention 2 Electrode plate 3 Opening part 4 Insulation member in the outer peripheral part of the metal plate of an electrode plate 5 Connection member 6 Metal pan 7 Metal plate of an electrode plate 9 Metal pan 10 Oil 20 External high voltage Supply device

Claims (5)

[Claims] 1. A fryer pan, wherein a metal electrode plate having a large number of apertures is installed in the vicinity of the bottom inside the metal pan while being electrically insulated from the pan. 2. The fryer pan according to claim 1, which is a tempura pan. 3. A metal electrode plate installed in the vicinity of a bottom portion inside a metal pot, wherein an outer peripheral portion of the electrode plate in contact with the pot is covered with a ceramic having high electrical insulation. The electrode plate of a fryer pan according to claim 1, wherein 4. The electrode plate according to claim 3, which is used for a fryer. 5. A method for producing fried food, comprising heating the edible oil to a high temperature and frying the edible oil in the edible oil while applying a voltage to the edible oil.